Commit c5538db2 authored by Lorenzo "Palinuro" Faletra's avatar Lorenzo "Palinuro" Faletra
Browse files

Import Upstream version 5.7.10

parent 675a03b4
Pipeline #742 failed with stages
......@@ -276,6 +276,6 @@ static inline unsigned long __must_check clear_user(void __user *to, unsigned lo
}
int copy_to_user_real(void __user *dest, void *src, unsigned long count);
void s390_kernel_write(void *dst, const void *src, size_t size);
void *s390_kernel_write(void *dst, const void *src, size_t size);
#endif /* __S390_UACCESS_H */
......@@ -36,6 +36,7 @@ struct vdso_data {
__u32 tk_shift; /* Shift used for xtime_nsec 0x60 */
__u32 ts_dir; /* TOD steering direction 0x64 */
__u64 ts_end; /* TOD steering end 0x68 */
__u32 hrtimer_res; /* hrtimer resolution 0x70 */
};
struct vdso_per_cpu_data {
......
......@@ -76,6 +76,7 @@ int main(void)
OFFSET(__VDSO_TK_SHIFT, vdso_data, tk_shift);
OFFSET(__VDSO_TS_DIR, vdso_data, ts_dir);
OFFSET(__VDSO_TS_END, vdso_data, ts_end);
OFFSET(__VDSO_CLOCK_REALTIME_RES, vdso_data, hrtimer_res);
OFFSET(__VDSO_ECTG_BASE, vdso_per_cpu_data, ectg_timer_base);
OFFSET(__VDSO_ECTG_USER, vdso_per_cpu_data, ectg_user_time);
OFFSET(__VDSO_GETCPU_VAL, vdso_per_cpu_data, getcpu_val);
......@@ -86,7 +87,6 @@ int main(void)
DEFINE(__CLOCK_REALTIME_COARSE, CLOCK_REALTIME_COARSE);
DEFINE(__CLOCK_MONOTONIC_COARSE, CLOCK_MONOTONIC_COARSE);
DEFINE(__CLOCK_THREAD_CPUTIME_ID, CLOCK_THREAD_CPUTIME_ID);
DEFINE(__CLOCK_REALTIME_RES, MONOTONIC_RES_NSEC);
DEFINE(__CLOCK_COARSE_RES, LOW_RES_NSEC);
BLANK();
/* idle data offsets */
......
......@@ -198,9 +198,10 @@ static debug_entry_t ***debug_areas_alloc(int pages_per_area, int nr_areas)
if (!areas)
goto fail_malloc_areas;
for (i = 0; i < nr_areas; i++) {
/* GFP_NOWARN to avoid user triggerable WARN, we handle fails */
areas[i] = kmalloc_array(pages_per_area,
sizeof(debug_entry_t *),
GFP_KERNEL);
GFP_KERNEL | __GFP_NOWARN);
if (!areas[i])
goto fail_malloc_areas2;
for (j = 0; j < pages_per_area; j++) {
......
......@@ -170,6 +170,8 @@ static noinline __init void setup_lowcore_early(void)
psw_t psw;
psw.mask = PSW_MASK_BASE | PSW_DEFAULT_KEY | PSW_MASK_EA | PSW_MASK_BA;
if (IS_ENABLED(CONFIG_KASAN))
psw.mask |= PSW_MASK_DAT;
psw.addr = (unsigned long) s390_base_ext_handler;
S390_lowcore.external_new_psw = psw;
psw.addr = (unsigned long) s390_base_pgm_handler;
......
......@@ -368,9 +368,9 @@ ENTRY(system_call)
jnz .Lsysc_nr_ok
# svc 0: system call number in %r1
llgfr %r1,%r1 # clear high word in r1
sth %r1,__PT_INT_CODE+2(%r11)
cghi %r1,NR_syscalls
jnl .Lsysc_nr_ok
sth %r1,__PT_INT_CODE+2(%r11)
slag %r8,%r1,3
.Lsysc_nr_ok:
xc __SF_BACKCHAIN(8,%r15),__SF_BACKCHAIN(%r15)
......
......@@ -324,6 +324,25 @@ static inline void __poke_user_per(struct task_struct *child,
child->thread.per_user.end = data;
}
static void fixup_int_code(struct task_struct *child, addr_t data)
{
struct pt_regs *regs = task_pt_regs(child);
int ilc = regs->int_code >> 16;
u16 insn;
if (ilc > 6)
return;
if (ptrace_access_vm(child, regs->psw.addr - (regs->int_code >> 16),
&insn, sizeof(insn), FOLL_FORCE) != sizeof(insn))
return;
/* double check that tracee stopped on svc instruction */
if ((insn >> 8) != 0xa)
return;
regs->int_code = 0x20000 | (data & 0xffff);
}
/*
* Write a word to the user area of a process at location addr. This
* operation does have an additional problem compared to peek_user.
......@@ -335,7 +354,9 @@ static int __poke_user(struct task_struct *child, addr_t addr, addr_t data)
struct user *dummy = NULL;
addr_t offset;
if (addr < (addr_t) &dummy->regs.acrs) {
struct pt_regs *regs = task_pt_regs(child);
/*
* psw and gprs are stored on the stack
*/
......@@ -353,7 +374,11 @@ static int __poke_user(struct task_struct *child, addr_t addr, addr_t data)
/* Invalid addressing mode bits */
return -EINVAL;
}
*(addr_t *)((addr_t) &task_pt_regs(child)->psw + addr) = data;
if (test_pt_regs_flag(regs, PIF_SYSCALL) &&
addr == offsetof(struct user, regs.gprs[2]))
fixup_int_code(child, data);
*(addr_t *)((addr_t) &regs->psw + addr) = data;
} else if (addr < (addr_t) (&dummy->regs.orig_gpr2)) {
/*
......@@ -719,6 +744,10 @@ static int __poke_user_compat(struct task_struct *child,
regs->psw.mask = (regs->psw.mask & ~PSW_MASK_BA) |
(__u64)(tmp & PSW32_ADDR_AMODE);
} else {
if (test_pt_regs_flag(regs, PIF_SYSCALL) &&
addr == offsetof(struct compat_user, regs.gprs[2]))
fixup_int_code(child, data);
/* gpr 0-15 */
*(__u32*)((addr_t) &regs->psw + addr*2 + 4) = tmp;
}
......@@ -838,40 +867,66 @@ long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
asmlinkage long do_syscall_trace_enter(struct pt_regs *regs)
{
unsigned long mask = -1UL;
long ret = -1;
if (is_compat_task())
mask = 0xffffffff;
/*
* The sysc_tracesys code in entry.S stored the system
* call number to gprs[2].
*/
if (test_thread_flag(TIF_SYSCALL_TRACE) &&
(tracehook_report_syscall_entry(regs) ||
regs->gprs[2] >= NR_syscalls)) {
tracehook_report_syscall_entry(regs)) {
/*
* Tracing decided this syscall should not happen or the
* debugger stored an invalid system call number. Skip
* Tracing decided this syscall should not happen. Skip
* the system call and the system call restart handling.
*/
clear_pt_regs_flag(regs, PIF_SYSCALL);
return -1;
goto skip;
}
#ifdef CONFIG_SECCOMP
/* Do the secure computing check after ptrace. */
if (secure_computing()) {
/* seccomp failures shouldn't expose any additional code. */
return -1;
if (unlikely(test_thread_flag(TIF_SECCOMP))) {
struct seccomp_data sd;
if (is_compat_task()) {
sd.instruction_pointer = regs->psw.addr & 0x7fffffff;
sd.arch = AUDIT_ARCH_S390;
} else {
sd.instruction_pointer = regs->psw.addr;
sd.arch = AUDIT_ARCH_S390X;
}
sd.nr = regs->int_code & 0xffff;
sd.args[0] = regs->orig_gpr2 & mask;
sd.args[1] = regs->gprs[3] & mask;
sd.args[2] = regs->gprs[4] & mask;
sd.args[3] = regs->gprs[5] & mask;
sd.args[4] = regs->gprs[6] & mask;
sd.args[5] = regs->gprs[7] & mask;
if (__secure_computing(&sd) == -1)
goto skip;
}
#endif /* CONFIG_SECCOMP */
if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT)))
trace_sys_enter(regs, regs->gprs[2]);
trace_sys_enter(regs, regs->int_code & 0xffff);
if (is_compat_task())
mask = 0xffffffff;
audit_syscall_entry(regs->gprs[2], regs->orig_gpr2 & mask,
audit_syscall_entry(regs->int_code & 0xffff, regs->orig_gpr2 & mask,
regs->gprs[3] &mask, regs->gprs[4] &mask,
regs->gprs[5] &mask);
if ((signed long)regs->gprs[2] >= NR_syscalls) {
regs->gprs[2] = -ENOSYS;
ret = -ENOSYS;
}
return regs->gprs[2];
skip:
clear_pt_regs_flag(regs, PIF_SYSCALL);
return ret;
}
asmlinkage void do_syscall_trace_exit(struct pt_regs *regs)
......
......@@ -1107,6 +1107,7 @@ void __init setup_arch(char **cmdline_p)
if (IS_ENABLED(CONFIG_EXPOLINE_AUTO))
nospec_auto_detect();
jump_label_init();
parse_early_param();
#ifdef CONFIG_CRASH_DUMP
/* Deactivate elfcorehdr= kernel parameter */
......
......@@ -301,6 +301,7 @@ void update_vsyscall(struct timekeeper *tk)
vdso_data->tk_mult = tk->tkr_mono.mult;
vdso_data->tk_shift = tk->tkr_mono.shift;
vdso_data->hrtimer_res = hrtimer_resolution;
smp_wmb();
++vdso_data->tb_update_count;
}
......
......@@ -18,8 +18,8 @@ KBUILD_AFLAGS_64 += -m64 -s
KBUILD_CFLAGS_64 := $(filter-out -m64,$(KBUILD_CFLAGS))
KBUILD_CFLAGS_64 += -m64 -fPIC -shared -fno-common -fno-builtin
KBUILD_CFLAGS_64 += -nostdlib -Wl,-soname=linux-vdso64.so.1 \
-Wl,--hash-style=both
ldflags-y := -fPIC -shared -nostdlib -soname=linux-vdso64.so.1 \
--hash-style=both --build-id -T
$(targets:%=$(obj)/%.dbg): KBUILD_CFLAGS = $(KBUILD_CFLAGS_64)
$(targets:%=$(obj)/%.dbg): KBUILD_AFLAGS = $(KBUILD_AFLAGS_64)
......@@ -37,8 +37,8 @@ KASAN_SANITIZE := n
$(obj)/vdso64_wrapper.o : $(obj)/vdso64.so
# link rule for the .so file, .lds has to be first
$(obj)/vdso64.so.dbg: $(src)/vdso64.lds $(obj-vdso64) FORCE
$(call if_changed,vdso64ld)
$(obj)/vdso64.so.dbg: $(obj)/vdso64.lds $(obj-vdso64) FORCE
$(call if_changed,ld)
# strip rule for the .so file
$(obj)/%.so: OBJCOPYFLAGS := -S
......@@ -50,8 +50,6 @@ $(obj-vdso64): %.o: %.S FORCE
$(call if_changed_dep,vdso64as)
# actual build commands
quiet_cmd_vdso64ld = VDSO64L $@
cmd_vdso64ld = $(CC) $(c_flags) -Wl,-T $(filter %.lds %.o,$^) -o $@
quiet_cmd_vdso64as = VDSO64A $@
cmd_vdso64as = $(CC) $(a_flags) -c -o $@ $<
......
......@@ -17,12 +17,14 @@
.type __kernel_clock_getres,@function
__kernel_clock_getres:
CFI_STARTPROC
larl %r1,4f
larl %r1,3f
lg %r0,0(%r1)
cghi %r2,__CLOCK_REALTIME_COARSE
je 0f
cghi %r2,__CLOCK_MONOTONIC_COARSE
je 0f
larl %r1,3f
larl %r1,_vdso_data
llgf %r0,__VDSO_CLOCK_REALTIME_RES(%r1)
cghi %r2,__CLOCK_REALTIME
je 0f
cghi %r2,__CLOCK_MONOTONIC
......@@ -36,7 +38,6 @@ __kernel_clock_getres:
jz 2f
0: ltgr %r3,%r3
jz 1f /* res == NULL */
lg %r0,0(%r1)
xc 0(8,%r3),0(%r3) /* set tp->tv_sec to zero */
stg %r0,8(%r3) /* store tp->tv_usec */
1: lghi %r2,0
......@@ -45,6 +46,5 @@ __kernel_clock_getres:
svc 0
br %r14
CFI_ENDPROC
3: .quad __CLOCK_REALTIME_RES
4: .quad __CLOCK_COARSE_RES
3: .quad __CLOCK_COARSE_RES
.size __kernel_clock_getres,.-__kernel_clock_getres
......@@ -117,7 +117,7 @@ static inline pte_t __rste_to_pte(unsigned long rste)
_PAGE_YOUNG);
#ifdef CONFIG_MEM_SOFT_DIRTY
pte_val(pte) |= move_set_bit(rste, _SEGMENT_ENTRY_SOFT_DIRTY,
_PAGE_DIRTY);
_PAGE_SOFT_DIRTY);
#endif
pte_val(pte) |= move_set_bit(rste, _SEGMENT_ENTRY_NOEXEC,
_PAGE_NOEXEC);
......
......@@ -55,19 +55,26 @@ static notrace long s390_kernel_write_odd(void *dst, const void *src, size_t siz
*/
static DEFINE_SPINLOCK(s390_kernel_write_lock);
void notrace s390_kernel_write(void *dst, const void *src, size_t size)
notrace void *s390_kernel_write(void *dst, const void *src, size_t size)
{
void *tmp = dst;
unsigned long flags;
long copied;
spin_lock_irqsave(&s390_kernel_write_lock, flags);
while (size) {
copied = s390_kernel_write_odd(dst, src, size);
dst += copied;
src += copied;
size -= copied;
if (!(flags & PSW_MASK_DAT)) {
memcpy(dst, src, size);
} else {
while (size) {
copied = s390_kernel_write_odd(tmp, src, size);
tmp += copied;
src += copied;
size -= copied;
}
}
spin_unlock_irqrestore(&s390_kernel_write_lock, flags);
return dst;
}
static int __no_sanitize_address __memcpy_real(void *dest, void *src, size_t count)
......
......@@ -168,12 +168,17 @@ static int genregs32_set(struct task_struct *target,
if (ret || !count)
return ret;
ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
&regs->y,
&regs->npc,
34 * sizeof(u32), 35 * sizeof(u32));
if (ret || !count)
return ret;
ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
&regs->y,
35 * sizeof(u32), 36 * sizeof(u32));
if (ret || !count)
return ret;
return user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf,
35 * sizeof(u32), 38 * sizeof(u32));
36 * sizeof(u32), 38 * sizeof(u32));
}
static int fpregs32_get(struct task_struct *target,
......
......@@ -213,7 +213,6 @@ SYM_FUNC_START(startup_32)
* We place all of the values on our mini stack so lret can
* used to perform that far jump.
*/
pushl $__KERNEL_CS
leal startup_64(%ebp), %eax
#ifdef CONFIG_EFI_MIXED
movl efi32_boot_args(%ebp), %edi
......@@ -224,11 +223,20 @@ SYM_FUNC_START(startup_32)
movl efi32_boot_args+8(%ebp), %edx // saved bootparams pointer
cmpl $0, %edx
jnz 1f
/*
* efi_pe_entry uses MS calling convention, which requires 32 bytes of
* shadow space on the stack even if all arguments are passed in
* registers. We also need an additional 8 bytes for the space that
* would be occupied by the return address, and this also results in
* the correct stack alignment for entry.
*/
subl $40, %esp
leal efi_pe_entry(%ebp), %eax
movl %edi, %ecx // MS calling convention
movl %esi, %edx
1:
#endif
pushl $__KERNEL_CS
pushl %eax
/* Enter paged protected Mode, activating Long Mode */
......@@ -776,6 +784,7 @@ SYM_DATA_LOCAL(boot_heap, .fill BOOT_HEAP_SIZE, 1, 0)
SYM_DATA_START_LOCAL(boot_stack)
.fill BOOT_STACK_SIZE, 1, 0
.balign 16
SYM_DATA_END_LABEL(boot_stack, SYM_L_LOCAL, boot_stack_end)
/*
......
......@@ -10,11 +10,11 @@ config PERF_EVENTS_INTEL_UNCORE
available on NehalemEX and more modern processors.
config PERF_EVENTS_INTEL_RAPL
tristate "Intel rapl performance events"
depends on PERF_EVENTS && CPU_SUP_INTEL && PCI
tristate "Intel/AMD rapl performance events"
depends on PERF_EVENTS && (CPU_SUP_INTEL || CPU_SUP_AMD) && PCI
default y
---help---
Include support for Intel rapl performance events for power
Include support for Intel and AMD rapl performance events for power
monitoring on modern processors.
config PERF_EVENTS_INTEL_CSTATE
......
# SPDX-License-Identifier: GPL-2.0-only
obj-y += core.o probe.o
obj-$(CONFIG_PERF_EVENTS_INTEL_RAPL) += rapl.o
obj-y += amd/
obj-$(CONFIG_X86_LOCAL_APIC) += msr.o
obj-$(CONFIG_CPU_SUP_INTEL) += intel/
......@@ -2,8 +2,6 @@
obj-$(CONFIG_CPU_SUP_INTEL) += core.o bts.o
obj-$(CONFIG_CPU_SUP_INTEL) += ds.o knc.o
obj-$(CONFIG_CPU_SUP_INTEL) += lbr.o p4.o p6.o pt.o
obj-$(CONFIG_PERF_EVENTS_INTEL_RAPL) += intel-rapl-perf.o
intel-rapl-perf-objs := rapl.o
obj-$(CONFIG_PERF_EVENTS_INTEL_UNCORE) += intel-uncore.o
intel-uncore-objs := uncore.o uncore_nhmex.o uncore_snb.o uncore_snbep.o
obj-$(CONFIG_PERF_EVENTS_INTEL_CSTATE) += intel-cstate.o
......
// SPDX-License-Identifier: GPL-2.0-only
/*
* Support Intel RAPL energy consumption counters
* Support Intel/AMD RAPL energy consumption counters
* Copyright (C) 2013 Google, Inc., Stephane Eranian
*
* Intel RAPL interface is specified in the IA-32 Manual Vol3b
* section 14.7.1 (September 2013)
*
* AMD RAPL interface for Fam17h is described in the public PPR:
* https://bugzilla.kernel.org/show_bug.cgi?id=206537
*
* RAPL provides more controls than just reporting energy consumption
* however here we only expose the 3 energy consumption free running
* counters (pp0, pkg, dram).
......@@ -58,8 +61,8 @@
#include <linux/nospec.h>
#include <asm/cpu_device_id.h>
#include <asm/intel-family.h>
#include "../perf_event.h"
#include "../probe.h"
#include "perf_event.h"
#include "probe.h"
MODULE_LICENSE("GPL");
......
......@@ -58,4 +58,9 @@ static inline bool handle_guest_split_lock(unsigned long ip)
return false;
}
#endif
#ifdef CONFIG_IA32_FEAT_CTL
void init_ia32_feat_ctl(struct cpuinfo_x86 *c);
#else
static inline void init_ia32_feat_ctl(struct cpuinfo_x86 *c) {}
#endif
#endif /* _ASM_X86_CPU_H */
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